298 lines
11 KiB
C
298 lines
11 KiB
C
/* $OpenBSD: i82596var.h,v 1.14 2022/01/09 05:42:38 jsg Exp $ */
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/* $NetBSD: i82586var.h,v 1.10 1998/08/15 04:42:42 mycroft Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Paul Kranenburg and Charles M. Hannum.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1992, 1993, University of Vermont and State
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* Agricultural College.
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* Copyright (c) 1992, 1993, Garrett A. Wollman.
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*
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* Portions:
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* Copyright (c) 1994, 1995, Rafal K. Boni
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* Copyright (c) 1990, 1991, William F. Jolitz
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* Copyright (c) 1990, The Regents of the University of California
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of Vermont
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* and State Agricultural College and Garrett A. Wollman, by William F.
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* Jolitz, and by the University of California, Berkeley, Lawrence
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* Berkeley Laboratory, and its contributors.
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* 4. Neither the names of the Universities nor the names of the authors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR AUTHORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Intel 82586/82596 Ethernet chip
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* Register, bit, and structure definitions.
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*
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* Original StarLAN driver written by Garrett Wollman with reference to the
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* Clarkson Packet Driver code for this chip written by Russ Nelson and others.
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*
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* BPF support code taken from hpdev/if_le.c, supplied with tcpdump.
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*
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* 3C507 support is loosely based on code donated to NetBSD by Rafal Boni.
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*
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* Majorly cleaned up and 3C507 code merged by Charles Hannum.
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*
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* Converted to SUN ie driver by Charles D. Cranor,
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* October 1994, January 1995.
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* This sun version based on i386 version 1.30.
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*/
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/* #define I82596_DEBUG */
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/* Debug elements */
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#define IED_RINT 0x01
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#define IED_TINT 0x02
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#define IED_RNR 0x04
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#define IED_CNA 0x08
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#define IED_READFRAME 0x10
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#define IED_ENQ 0x20
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#define IED_XMIT 0x40
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#define IED_CMDS 0x80
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#define IED_ALL 0xff
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#define B_PER_F 6 /* recv buffers per frame */
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#define IE_RBUF_SIZE 256 /* size of each receive buffer;
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MUST BE POWER OF TWO */
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#define NTXBUF 4 /* number of transmit commands */
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#define IE_TBUF_SIZE ETHER_MAX_LEN /* length of transmit buffer */
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#define IE_MAXMCAST (IE_TBUF_SIZE/6)/* must fit in transmit buffer */
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#define IE_INTR_ENRCV 1 /* receive pkt interrupt */
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#define IE_INTR_ENSND 2 /* send pkt interrupt */
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#define IE_INTR_LOOP 3 /* a loop for next one*/
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#define IE_INTR_EXIT 4 /* done w/ interrupts */
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#define IE_CHIP_PROBE 0 /* reset called from chip probe */
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#define IE_CARD_RESET 1 /* reset called from card reset */
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#define IE_PORT_RESET 0
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#define IE_PORT_TEST 1
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#define IE_PORT_SCP 2
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#define IE_PORT_DUMP 3
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/*
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* Ethernet status, per interface.
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*
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* The chip uses two types of pointers: 16 bit and 24 bit
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* 24 bit pointers cover the board's memory.
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* 16 bit pointers are offsets from the ISCP's `ie_base'
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*
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* The board's memory is represented by the bus handle `bh'. The MI
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* i82586/596 driver deals exclusively with offsets relative to the
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* board memory bus handle. The `ie_softc' fields below that are marked
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* `MD' are in the domain of the front-end driver; they opaque to the
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* MI driver part.
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*
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* The front-end is required to manage the SCP and ISCP structures. i.e.
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* allocate room for them on the board's memory, and arrange to point the
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* chip at the SCB structure, the offset of which is passed to the MI
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* driver in `sc_scb'.
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*
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* The following functions provide the glue necessary to deal with
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* host and bus idiosyncrasies:
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*
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* hwreset - board reset
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* hwinit - board initialization
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* chan_attn - get chip to look at prepared commands
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* intrhook - board dependent interrupt processing
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*
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* All of the following shared-memory access function use an offset
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* relative to the bus handle to indicate the shared memory location.
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* The bus_{read/write}N function take or return offset into the
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* shared memory in the host's byte-order.
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*
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* memcopyin - copy device memory: board to KVA
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* memcopyout - copy device memory: KVA to board
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* bus_read16 - read a 16-bit i82586 pointer
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`offset' argument will be 16-bit aligned
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* bus_write16 - write a 16-bit i82586 pointer
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`offset' argument will be 16-bit aligned
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* bus_write24 - write a 24-bit i82586 pointer
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`offset' argument will be 32-bit aligned
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*
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*/
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struct ie_softc {
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struct device sc_dev; /* device structure */
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void *sc_ih;
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bus_space_tag_t iot; /* bus-space tag of card registers */
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bus_space_handle_t ioh; /* bus-space handle of card registers */
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bus_space_tag_t bt; /* bus-space tag of card memory */
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bus_space_handle_t bh; /* bus-space handle of card memory */
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const char *sc_type; /* (MD) hardware type */
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int sc_vers; /* (MD) hardware version */
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int sc_irq; /* (MD) irq in md format */
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void *sc_iobase; /* (MD) KVA of base of 24 bit addr space */
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u_long sc_maddr; /* (MD) base of chip's RAM (16bit addr space) */
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u_int sc_msize; /* (MD) how much RAM we have/use */
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u_int sc_flags; /* (MI/MD) flags */
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#define IEMD_FLAG0 0x00010000
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#define IEMD_FLAG1 0x00020000
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#define IEMD_FLAG2 0x00040000
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#define IEMD_FLAG3 0x00080000
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#define IEMD_FLAG4 0x00100000
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#define IEMD_FLAG5 0x00200000
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#define IEMD_FLAG6 0x00400000
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#define IEMD_FLAG7 0x00800000
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struct arpcom sc_arpcom; /* system ethercom structure */
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struct ifmedia sc_media; /* supported media information */
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/* Bus glue */
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void (*hwreset)(struct ie_softc *, int);
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void (*hwinit)(struct ie_softc *);
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void (*chan_attn)(struct ie_softc *);
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void (*port)(struct ie_softc *, u_int);
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int (*intrhook)(struct ie_softc *, int where);
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void (*memcopyin)(struct ie_softc *, void *, int, size_t);
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void (*memcopyout)(struct ie_softc *, const void *,
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int, size_t);
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u_int16_t (*ie_bus_read16)(struct ie_softc *, int offset);
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void (*ie_bus_write16)(struct ie_softc *, int offset,
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u_int16_t value);
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void (*ie_bus_write24)(struct ie_softc *, int offset,
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int addr);
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/* Media management */
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int (*sc_mediachange)(struct ie_softc *);
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/* card dependent media change */
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void (*sc_mediastatus)(struct ie_softc *, struct ifmediareq *);
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/* card dependent media status */
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/*
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* Offsets (relative to bus handle) of the i82586 SYSTEM structures.
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*/
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int scp; /* Offset to the SCP (set by front-end) */
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int iscp; /* Offset to the ISCP (set by front-end) */
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int scb; /* Offset to SCB (set by front-end) */
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/*
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* Offset and size of a block of board memory where the buffers
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* are to be allocated from (initialized by front-end).
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*/
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int buf_area; /* Start of descriptors and buffers */
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int buf_area_sz; /* Size of above */
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/* SYSBUS byte */
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int sysbus;
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/*
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* The buffers & descriptors (recv and xmit)
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*/
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int rframes; /* Offset to `nrxbuf' frame descriptors */
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int rbds; /* Offset to `nrxbuf' buffer descriptors */
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int rbufs; /* Offset to `nrxbuf' receive buffers */
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#define IE_RBUF_ADDR(sc, i) (sc->rbufs + ((i) * IE_RBUF_SIZE))
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int rfhead, rftail;
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int rbhead, rbtail;
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int nframes; /* number of frames in use */
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int nrxbuf; /* number of recv buffs in use */
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int rnr_expect; /* XXX - expect a RCVR not ready interrupt */
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int nop_cmds; /* Offset to NTXBUF no-op commands */
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int xmit_cmds; /* Offset to NTXBUF transmit commands */
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int xbds; /* Offset to NTXBUF buffer descriptors */
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int xbufs; /* Offset to NTXBUF transmit buffers */
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#define IE_XBUF_ADDR(sc, i) (sc->xbufs + ((i) * IE_TBUF_SIZE))
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int xchead, xctail;
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int xmit_busy;
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int do_xmitnopchain; /* Controls use of xmit NOP chains */
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/* Multicast addresses */
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char *mcast_addrs; /* Current MC filter addresses */
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int mcast_addrs_size; /* Current size of MC buffer */
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int mcast_count; /* Current # of addrs in buffer */
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int want_mcsetup; /* run mcsetup at next opportunity */
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int promisc; /* are we in promisc mode? */
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int async_cmd_inprogress; /* we didn't wait for 586 to accept
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a command */
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#ifdef I82596_DEBUG
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int sc_debug;
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#endif
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};
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/* Exported functions */
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int i82596_intr(void *);
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int i82596_probe(struct ie_softc *);
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int i82596_proberam(struct ie_softc *);
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void i82596_attach(struct ie_softc *, const char *, u_int8_t *,
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uint64_t *, int, uint64_t);
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int i82596_start_cmd(struct ie_softc *, int, int, int, int);
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/*
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* Interrupt Acknowledge.
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*/
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static __inline__ void
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ie_ack(struct ie_softc *sc, u_int mask) /* in native byte-order */
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{
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u_int status;
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int off = IE_SCB_STATUS(sc->scb);
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bus_space_barrier(sc->bt, sc->bh, off, 2, BUS_SPACE_BARRIER_READ);
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status = (sc->ie_bus_read16)(sc, off);
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i82596_start_cmd(sc, status & mask, 0, 0, 0);
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}
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